LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
European Terminal VFD Filter High Performance EMC
If you’re sourcing EMI filters for variable frequency drive applications and you’ve been burned before by filters that overheat, corrode, or just don’t suppress interference the way the datasheet promised — this is worth reading.
The LZ920-S Series is built specifically for the input and output side of VFDs (Variable Frequency Drives / Inverters). Not a general-purpose power filter repurposed for the job — this one is engineered from the ground up for the harsh electrical environment that drives create. High-frequency harmonic currents, switching noise, common-mode and differential-mode EMI — these filters handle all of it, rated up to 250/440VAC, 50/60Hz, across a current range of 60A to 110A.
Key Highlights at a Glance
- ✅ Purpose-built for VFD input & output — not a generic power line filter
- ✅ European-style screw terminal blocks (欧规端子台) — tool-friendly, vibration-resistant, suits DIN rail cabinet wiring standards preferred in EU and industrial markets
- ✅ Rated: 250/440VAC | 50/60Hz | 60A–110A — covers most mid-to-large industrial drive setups
- ✅ Operating temperature: -25°C to +85°C — reliable in real factory floor conditions
- ✅ CE + RoHS certified — confirmed on label, ready for European market compliance documentation
- ✅ Stainless/galvanized steel enclosure — corrosion-resistant, panel-mount flanges pre-drilled
- ✅ Suppresses both EMI conducted emissions and high-frequency harmonics — protects upstream equipment and keeps your installation within EMC directives
Who This Is For
This product is designed for OEM equipment manufacturers, electrical panel builders, VFD system integrators, and industrial machinery exporters — particularly those shipping to Europe, Australia, or any market with strict EMC compliance requirements.
If your customer’s VFD installation is tripping nearby PLCs, corrupting sensor signals, or failing CE EMC tests — adding the right filter at the inverter’s input or output solves it. We’ve seen engineers spec generic filters and wonder why interference persists. The difference is in the filter topology and the current rating matching. This series is rated to handle the actual load without thermal derating that kills filter life.
Why European Terminal Blocks Matter Here
Most Asian-market EMI filters ship with lug-type or ring terminals. The LZ920-S uses European-style push-screw terminal blocks — the kind your panel wiring technicians actually want to work with. Faster termination, easier re-routing, no ring crimping tools required on site. For cabinet integrators building in volume, this cuts assembly time per unit noticeably.
Specs Summary
| Parameter | Value |
|---|---|
| Model | LZ920-S Series (e.g. LZ920-100A-S) |
| Voltage | 250/440VAC |
| Frequency | 50 / 60Hz |
| Current Range | 60A / 75A / 100A / 110A (to specify) |
| Phases | 3-Phase (L1, L2, L3 + Ground) |
| Operating Temp | -25°C ~ +85°C |
| Terminal Type | European Screw Terminal Block |
| Application | VFD Input / Output EMI Filter |
| Certifications | CE, RoHS |
| Manufacturer | Shenzhen LIZE Electronic Technology Co., Ltd |
From the Factory Floor — Best Practice Notes
Based on field experience and customer feedback from industrial integrators:
- Always match filter current rating at 80% of max load — running a 100A filter at continuous 100A in a high-ambient enclosure shortens service life. Spec up one size if your drive operates near full load most of the time.
- Install as close to the VFD terminals as possible — the longer the cable between filter and drive, the more re-radiation you allow. Keep it under 30cm where possible.
- Ground the filter enclosure directly to the panel backplate — not through a long wire. A short, wide copper braid bond gives you the best high-frequency ground path and is the single most common installation mistake we see.
- Use on both input AND output if your load cables are long — output-side filters protect motor cables from radiating EMI back into signal wiring. Many integrators only filter the input and then wonder why motor cable routing still causes issues.
- Do not share the filter’s neutral/ground with noisy equipment — keep the EMI filter ground reference clean. This is especially relevant in mixed-load panels.
FAQ
Can this filter be used on both the input and output side of a VFD?
Yes. The LZ920-S is rated for both configurations. That said, output-side filters need to handle the PWM switching harmonics from the drive — this series is designed for exactly that. Just confirm your output cable length and load type when you inquire, and we can confirm the right model.
What certifications does the product carry, and can you provide documentation for CE compliance?
The filter carries CE and RoHS markings, as shown on the product label. We can provide test reports and declaration of conformity documents upon request — standard requirement for EU market customers, and we handle it regularly.
Do you support OEM labeling or custom current ratings for volume orders?
Yes. For qualified volume orders, we support OEM branding, custom label printing, and can discuss tailored current ratings or enclosure modifications. Tell us your application specs and annual volume and we’ll give you a straight answer on what’s feasible.
What’s the minimum order quantity, and what are the lead times?
MOQ and lead time depend on model and quantity. Stock models (100A, 75A) typically ship within 5–10 business days. Custom specs or large orders are quoted individually. Contact us with your target quantity and delivery location — we’ll give you a realistic timeline, not a sales promise.
How do I know which current rating to choose for my application?
Match the filter’s rated current to your VFD’s input current (not just motor nameplate current). If your 37kW drive draws up to 80A at input under full load, the 100A model gives you the right headroom. We’re happy to help cross-reference your drive specs — just send us the drive model or input current rating.
Ready to discuss specs, samples, or volume pricing? Send us your drive specs and we’ll get back to you with a direct recommendation.